omg i am so bad at this i just received a Modem from Vodafone with a letter asking me to switch it from the old one to the new one, this is so hard for me to understand what i need to do but ill give it a go. my question is once i update / swap to the new modem how do i update the wifi exrender that i bought earlier this year (we have bad reception in the house and this was the only way top get intternet in the bedrooms)

techno phobe i admit - Vodafone what help is there for people like me who are useless at this stuff?